28271306 has 16 divisors (see below), whose sum is σ = 51316416. Its totient is φ = 11403456.

The previous prime is 28271291. The next prime is 28271311. The reversal of 28271306 is 60317282.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59156 + ... + 59631.

It is an arithmetic number, because the mean of its divisors is an integer number (3207276).

Almost surely, 2^28271306 is an apocalyptic number.

28271306 is a deficient number, since it is larger than the sum of its proper divisors (23045110).

28271306 is a wasteful number, since it uses less digits than its factorization.

28271306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118813.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 28271306 is about 5317.0768284839. The cubic root of 28271306 is about 304.6365140423.

Adding to 28271306 its reverse (60317282), we get a palindrome (88588588).

The spelling of 28271306 in words is "twenty-eight million, two hundred seventy-one thousand, three hundred six".